giselle39 giselle39

07-11-2019
Chemistry

contestada

16) The mass number of an element whose atoms have 12 protons and 13 neutrons is_
a) 12
b) 13c) 25 d) 12.5

Respuesta :

keturahh3 keturahh3

07-11-2019

the answer is c) 25 because the mass number is the # of protons and neutrons in the nucleus, therefor, 12 + 13 = 25

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